CN104590367B - Rear axle steering mechanism of puddle jumper - Google Patents
Rear axle steering mechanism of puddle jumper Download PDFInfo
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- CN104590367B CN104590367B CN201410836773.3A CN201410836773A CN104590367B CN 104590367 B CN104590367 B CN 104590367B CN 201410836773 A CN201410836773 A CN 201410836773A CN 104590367 B CN104590367 B CN 104590367B
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- cylinder
- centering
- oil pocket
- cylinder barrel
- rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/16—Arrangement of linkage connections
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
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Abstract
The invention relates to a rear axle steering mechanism of a puddle jumper, and belongs to the technical field of automobile steering systems. The rear axle steering mechanism comprises a left steering side pull rod, a right steering side pull rod, a left knuckle and a right knuckle. The left steering side pull rod is hinged to the left knuckle, the right steering side pull rod is hinged to the right knuckle, an integrated driving centering hydraulic cylinder is further included, the left end of the integrated driving centering hydraulic cylinder is hinged to the left steering side pull rod, and the right end of the integrated driving centering hydraulic cylinder is hinged to the right steering side pull rod. A driving cylinder barrel with an active steering function, a centering cylinder barrel with a centering and returning function and a track rod supporting cylinder barrel are integrated together, connection of bulbs on the two sides is omitted, and the structure of a rear axle steering mechanical system can be compact through the structure.
Description
Technical field
The invention belongs to automobile steering system technical field, and in particular to a kind of puddle jumper rear-axle steering mechanism.
Background technology
In puddle jumper all-wheel control system, rear-axle steering need to possess active steering function and need to possess in needs
When return to automobile straight-going state locked function.Due to causing vehicle frame horizontal space less using independent suspension, postpone in cloth
To ensure above-mentioned functions in bridge steering mechanism, it is difficult to arrange the hydraulic cylinder of double-swing arm steering trapezium and traditional two ends with bulb
And lockable mechanism.
The content of the invention
The purpose of the present invention is aiming at the defect of prior art, there is provided a kind of have a simple structure, flexible arrangement it is light
Type offroad vehicle rear-axle steering mechanism.
The technical solution used in the present invention is：Including left steering lateral bracing strut, right turn lateral bracing strut, left steering section and right turn
Section, the left steering lateral bracing strut are hinged with left steering section, and the right turn lateral bracing strut is hinged with right turn section, and it also includes integrated
Formula drives centering hydraulic cylinder, the integrated form to drive centering hydraulic cylinder left end to be hinged left steering lateral bracing strut, and the integrated form drives
Centering hydraulic cylinder right-hand member is hinged right turn lateral bracing strut.
Further preferred structure, the integrated form drive centering hydraulic cylinder to include hydraulic pressure cylinder housing, the hydraulic cylinder shell
It is provided with drag link in vivo to support cylinder barrel, drive cylinder barrel and centering cylinder barrel；The drag link is supported in cylinder barrel and is provided through drag link
The drag link of cylinder barrel, described drag link one end is supported to stretch out drag link and support the part of cylinder barrel to be fixedly connected with contiguous block；It is described
Drive, the part and contiguous block fixation company for driving cylinder barrel is stretched out in described driving cylinder rod one end
Connect；Centering cylinder rod is provided with the centering cylinder barrel, part and the contiguous block of centering cylinder barrel is stretched out in described centering cylinder rod one end
It is fixedly connected.
In above-mentioned technical proposal, drag link, driving cylinder rod and centering cylinder rod are linked together by contiguous block, tied
Structure is compact, reliable transmission.
Further preferred structure, the drag link left end stretch out part and the left steering lateral bracing strut that drag link supports cylinder barrel
It is hinged, the right turn lateral bracing strut is hinged with contiguous block.
Further preferred structure, the driving cylinder barrel and centering cylinder barrel support cylinder barrel to be arranged in parallel relative to drag link.
Further preferred structure, is provided with driving cylinder piston and is separately positioned on a driving cylinder piston left side in the driving cylinder barrel
The first right oil pocket and the second oil pocket；The left power-assisted hydraulic fluid port of driving cylinder and the right power-assisted oil of driving cylinder are provided with the hydraulic pressure cylinder housing
Mouthful, first oil pocket is communicated with the left power-assisted hydraulic fluid port of driving cylinder, and second oil pocket is communicated with the right power-assisted hydraulic fluid port of driving cylinder, described
Driving cylinder piston is fixedly connected with cylinder rod is driven.
Further preferred structure, is provided with the magnet ring being threadedly coupled with driving cylinder interlinking lever end in the driving cylinder barrel and is fixed
Seat and the Linear displacement transducer fixed seat that is threadedly coupled is passed on left with cylinder barrel is driven, set in the magnet ring fixed seat left end hole
There is the magnet ring fastened by Cross Recess Head Screw, in described Linear displacement transducer fixed seat, be provided with linear displacement sensing
Device, described Linear displacement transducer left end are provided with Linear displacement transducer wire harness and are connected to the outside for driving cylinder barrel.
Further preferred structure, is provided with rear end floating piston and rod end floating piston, institute in the centering cylinder barrel
State rod end floating piston and be set on centering cylinder rod and spacing by being fixed on the connecting-rod bolts of centralizing cylinder interlinking lever end, institute
State and the 3rd oil pocket is formed with centering inner wall of cylinder on the left of rear end floating piston, on the right side of the rod end floating piston and centralizing cylinder
Cylinder inwall forms the 4th oil pocket, forms air chamber between the rear end floating piston and rod end floating piston.
Further preferred structure, is provided with centralizing cylinder hydraulic fluid port, on the centering cylinder barrel cylinder wall on the hydraulic pressure cylinder housing
Internal oil channel is provided with, the centralizing cylinder hydraulic fluid port is communicated with internal oil channel entrance, the internal oil channel includes connecting first in centering cylinder barrel
Outlet and second outlet, the first outlet are communicated with the 3rd oil pocket, and the second outlet is communicated with the 4th oil pocket；The air
Chamber is communicated with the pore for leading to air；The air chamber is not communicated with the 3rd oil pocket, the 4th oil pocket.
In above-mentioned technical proposal, the setting of the first outlet and second outlet of internal oil channel makes the 3rd oil pocket and the 4th oil pocket
Can simultaneously oil-feed, and then meet the alignment function of centering cylinder barrel.
Further preferred structure, is provided with left position jump ring between the rear end floating piston and rod end floating piston
With right middle position jump ring, the left position jump ring and right middle position jump ring is spacing is arranged in the groove of centering inner wall of cylinder, the left side
The distance between the left end of middle position jump ring and right-hand member of right middle position jump ring and the connecting-rod bolts thickness are equal.
In above-mentioned technical proposal, left position jump ring and right middle position jump ring are floated with rod end respectively as rear end floating piston
The position limiting structure of piston.
The distance between further preferred structure, the left end of the magnet ring fixed seat and end face of Linear displacement transducer
Constitute the effective travel for driving cylinder rod to be moved to the left in the first oil pocket, the right-hand member and the first guide holder of the driving cylinder piston
The distance between left end constitute and drive effective travel of the cylinder rod in the second oil pocket, the driving cylinder rod is in the first oil pocket
It is equal with the effective travel in the second oil pocket.
Further preferred structure, left end and the limit base being arranged in centering cylinder barrel of the rear end floating piston
Ultimate range between right-hand member constitutes the effective travel that centering cylinder rod is moved to the left in the 3rd oil pocket, and the rod end floats
Ultimate range between the left end of the right-hand member of piston and the second guide holder constitutes centering cylinder rod and moves right in the 4th oil pocket
Effective travel, effective travel of the centering cylinder rod in the 3rd oil pocket and the 4th oil pocket be equal.
Further preferred structure, effective travel of the centering cylinder rod in the 3rd oil pocket or the 4th oil pocket is than driving
Effective travel of the cylinder rod in the first oil pocket or the second oil pocket is little.
Further preferred structure, the drag link support cylinder barrel two ends to be provided with for supporting the DU bearings of drag link, stopping
Rotating ring, jump ring, anti-dust seal.
Further preferred structure, the integrated form drive centering hydraulic cylinder to be fixed on vapour by bolt and installation screwed hole
In car crossbeam.
The present invention has the advantages that to reduce Ackermam error compared to existing double-swing arm steering trapezium；With actively
Drive cylinder barrel, the centering cylinder barrel with centering return function and the drag link of turning function supports cylinder barrel to integrate, and saves
Both sides bulb connection, can make the mechanical system structure of rear-axle steering compact by this structure.
Description of the drawings
Fig. 1 is the rear-axle steering mechanism structure schematic diagram of the present invention；
Fig. 2 is the structural representation that integrated form of the present invention drives centering hydraulic cylinder；
Fig. 3 is right turn lateral bracing strut structural representation of the present invention；
Fig. 4 is present hydraulic cylinder shell structure schematic diagram；
Fig. 5 is that drag link of the present invention supports cylinder barrel internal structure schematic diagram；
Fig. 6 is internal structure schematic diagram when integrated form of the present invention drives centering hydraulic cylinder middle position；
Fig. 7 is partial structurtes enlarged drawing at A in Fig. 6；
Fig. 8 is partial structurtes enlarged drawing at B in Fig. 6；
Fig. 9 is schematic diagram when integrated form of the present invention drives centering hydraulic cylinder to drive to the right steering；
Figure 10 is schematic diagram when integrated form of the present invention drives centering hydraulic cylinder centering return locked.
In figure：1- left steering wheels, 2- left steering sections, 3- left steering lateral bracing struts, 4- car crossbeams, 5- integrated forms drive centering liquid
Cylinder pressure, 6- bolts, 7- right turn lateral bracing struts, 8- right turn sections, 9- right turn wheels, 10- drag links, 11- hydraulic pressure cylinder housings, 12-
The left power-assisted hydraulic fluid port of driving cylinder, 13- install screwed hole, the right power-assisted hydraulic fluid port of 14- driving cylinders, 15- drive cylinder rod, 16- contiguous blocks,
17- locking nuts, 18- centering cylinder rods, 19- centralizing cylinder hydraulic fluid ports, 20- draw-in bar bulb components, 21- toe-in adjusting nuts, 22-
Outside link bulb component, 23- rear end floating pistons, 24- pores, 25- rod end floating pistons, 26- driving cylinder pistons, 27-
Cylinder barrel, 28- drag links is driven to support cylinder barrel, 29- centering cylinder barrels, 30- jump rings, 31- anti-dust seals, 32- locating snap rings, 33-DU axles
Hold, 34- greases, the right middle position jump rings of 35-, the left position jump rings of 36-, 37- internal oil channels, 38- connecting-rod bolts, the first oil pockets of 39-,
The second oil pockets of 40-, the 3rd oil pockets of 41-, the 4th oil pockets of 42-, 43- air chambers, 44- limit bases, 45- Linear displacement transducers, 46-
Magnet ring fixed seat, 47- mark closely screw, 48- Linear displacement transducer fixed seats, 49- magnet rings, 50- Cross Recess Head Screws, 51-
First guide holder, the second guide holders of 52-.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, is easy to be well understood to this
It is bright, but they do not constitute restriction to the present invention.
As shown in Figure 1 and Figure 2, the present invention includes that left steering wheel 1, right turn wheel 9, integrated form drive centering hydraulic cylinder 5；Institute
Stating integrated form drives centering hydraulic cylinder 5 to be fixed on vehicle beam 4 by bolt 6 and installation screwed hole 13；The integrated form drives
Dynamic centering hydraulic cylinder 5, left end are threaded connection left steering lateral bracing strut 3, and right-hand member is threaded connection right turn lateral bracing strut
7；The left steering wheel 1 is fixedly connected with left steering section 2；The right turn wheel 9 is fixedly connected with right turn section 8；The left-hand rotation
It is connected by bulb to section 2 with left steering lateral bracing strut 3；The right turn section 8 is connected by bulb with right turn lateral bracing strut 7.
As shown in figure 3, the right turn lateral bracing strut 7, comprising the threaded draw-in bar bulb component 20 of left end, prenex adjustment
Nut 21 and outside link bulb component 22；The draw-in bar bulb component 20 is connected with outside link bulb component 22 by screw thread；
The prenex adjusting nut 21 is used for the toe-angle for adjusting rear-axle steering wheel.
As Figure 1-Figure 5, the present invention includes hydraulic pressure cylinder housing 11, and drag link is provided with the hydraulic pressure cylinder housing 11
Support cylinder barrel 28, driving cylinder barrel 27 and centering cylinder barrel 29；The drag link supports and drag link support cylinder barrel is provided through in cylinder barrel 28
28 drag link 10,10 one end of the drag link are stretched out drag link and support the part of cylinder barrel 28 to be fixedly connected with contiguous block 16；Institute
State and in driving cylinder barrel 27, be provided with driving cylinder rod 15, it is described to drive the part that driving cylinder barrel 27 is stretched out in 15 one end of cylinder rod by lock
Tight nut 17 is fixedly connected with contiguous block 16；Centering cylinder rod 18, the centering cylinder rod 18 are provided with the centering cylinder barrel 29
Stretch out the part of centering cylinder barrel 29 and be fixedly connected with contiguous block 16 by locking nut 17 in one end.10 left end of the drag link stretches out
Drag link supports the part of cylinder barrel 28 to be hinged with left steering lateral bracing strut 3, and the right turn lateral bracing strut 7 is hinged with contiguous block 16.Institute
Stating driving cylinder barrel 27 and centering cylinder barrel 29 supports cylinder barrel 28 to be arranged in parallel relative to drag link.The drag link 10 and contiguous block 16
Fastening, the centering cylinder rod 18, drag link 10 and driving cylinder rod are realized by the threaded connection of draw-in bar bulb component 20
15 realize synchronous linear movement relation by contiguous block 16；The drag link 10 can support the axial direction of cylinder barrel 28 to carry out along drag link
Linear reciprocal movement, by left steering section 2, left steering lateral bracing strut 3, drag link 10, right turn lateral bracing strut 7,8 common structure of right turn section
Into rear-axle steering tie rod linkage.The drag link supports 28 two ends of cylinder barrel to be provided with for supporting the DU bearings 33 of drag link 10, stopping
Rotating ring 32, jump ring 30, anti-dust seal 31, drag link to be supported and be provided with grease 34 between cylinder barrel 28 and drag link 10.
As shown in Figure 6, Figure 7, driving cylinder piston 26 is provided with the driving cylinder barrel 27 and be separately positioned on driving cylinder piston
26 or so the first oil pocket 39 and the second oil pocket 40；The left power-assisted hydraulic fluid port 12 of driving cylinder is provided with the hydraulic pressure cylinder housing 11 and is driven
The right power-assisted hydraulic fluid port 14 of cylinder, the left power-assisted hydraulic fluid port of first oil pocket 39 and driving cylinder 12 are communicated, second oil pocket 40 and driving cylinder
Right power-assisted hydraulic fluid port 14 is communicated, and the driving cylinder piston 26 is fixedly connected with cylinder rod 15 is driven.It is provided with the driving cylinder barrel 27
With drive the magnet ring fixed seat 46 that be connected of 15 end thread of cylinder rod and pass on left with driving cylinder barrel 27 be threadedly coupled linear
Displacement transducer fixed seat 48, the magnet ring fixed seat are provided with the magnet ring fastened by Cross Recess Head Screw 50 in 46 left end hole
49, to the physical location of real-time perception driving cylinder piston 26, in described Linear displacement transducer fixed seat 48, it is provided with linear
Displacement transducer 45, prevents the axial displacement of Linear displacement transducer 45 and rotates in a circumferential direction by marking closely screw 47, described line
Property 45 left end of displacement transducer be provided with Linear displacement transducer wire harness 45.1 be connected to drive cylinder barrel 27 outside.
As shown in Fig. 6, Fig. 8, in the centering cylinder barrel 29, rear end floating piston 23 and rod end floating piston 25 are provided with,
The rod end floating piston 25 is set on centering cylinder rod 18 and by being fixed on the connecting rod spiral shell of 18 end of centering cylinder rod
Bolt 38 is spacing, the rod end floating piston 25 can on middle cylinder rod 18 slide, on the left of the rear end floating piston 23
The 3rd oil pocket 41 is formed with 29 inwall of centering cylinder barrel, on the right side of the rod end floating piston 25, the is formed with 29 inwall of centering cylinder barrel
Four oil pockets 42, form air chamber 43 between the rear end floating piston 23 and rod end floating piston 25.
As shown in fig. 6, centralizing cylinder hydraulic fluid port 19 is provided with the hydraulic pressure cylinder housing 11, set on 29 cylinder wall of centering cylinder barrel
There is internal oil channel 37, the centralizing cylinder hydraulic fluid port 19 is communicated with 37 entrance of internal oil channel, the internal oil channel 37 includes connecting centering cylinder barrel 29
Interior first outlet 37.1 and second outlet 37.2, the first outlet 37.1 are communicated with the 3rd oil pocket 41, the second outlet
37.2 are communicated with the 4th oil pocket 42；The air chamber 43 is communicated with the pore 24 for leading to air；The air chamber 43 is oily with the 3rd
Chamber 41, the 4th oil pocket 42 are not communicated with.
As shown in Fig. 6, Fig. 8, left position card between the rear end floating piston 23 and rod end floating piston 25, is provided with
Spring 36 and right middle position jump ring 35, the left position jump ring 36 and right middle position jump ring 35 is spacing is arranged on the recessed of 29 inwall of centering cylinder barrel
In groove 29.1, the distance between the left end of the left position jump ring 36 and right-hand member of right middle position jump ring 35 and the connecting-rod bolts 38
Thickness is equal.
As shown in fig. 6, between the end face 45.2 of the left end and Linear displacement transducer 45 of the magnet ring fixed seat 46 away from
The effective travel for driving cylinder rod 15 to be moved to the left in the first oil pocket 39 is constituted from (when integrated form drives centering oil cylinder middle position),
(integrated form drives centering oil cylinder middle position to the distance between left end of the right-hand member of the driving cylinder piston 26 and the first guide holder 51
When) constitute and drive effective travel of the cylinder rod 15 in the second oil pocket 40, the driving cylinder rod 15 is in the first oil pocket 39 and the
Effective travel in two oil pockets 40 is equal；The left end of the rear end floating piston 23 be arranged on it is spacing in centering cylinder barrel 29
Ultimate range between the right-hand member of seat 44 constitutes the effective travel that centering cylinder rod 18 is moved to the left in the 3rd oil pocket 41, described
Ultimate range between the left end of the right-hand member of rod end floating piston 25 and the second guide holder 52 constitutes centering cylinder rod 18 the
The effective travel moved right in four oil pockets 42, the centering cylinder rod 18 are effective in the 3rd oil pocket 41 and the 4th oil pocket 42
Stroke is equal, is realized by the auxiliary of limit base 44 being arranged in centering cylinder barrel 29.The centering cylinder rod 18 is in the 3rd oil pocket
41 or the 4th effective travel in oil pocket 42 than driving effective travel of the cylinder rod 15 in the first oil pocket 39 or the second oil pocket 40
It is little such that it is able to ensure that Linear displacement transducer is not subject to crushing.
The course of work of the present invention：As shown in fig. 6, automobile straight-going state or back axle not steering state.Positive work is returned in responsible centering
Can centering cylinder barrel 29 on the 3rd oil pocket 41 communicated with oil return tank by centralizing cylinder hydraulic fluid port 19, it is the on centering cylinder barrel 29 the 4th oily
Chamber 42 is also communicated with oil return tank through internal oil channel 37 to centralizing cylinder hydraulic fluid port 19, is now made by the 3rd oil pocket 41 and the 4th oil pocket 42
0 is approximately for the thrust (or pulling force) on centering cylinder rod 18, centering cylinder rod 18 does not cut any ice to drag link 10 power；
The left power-assisted hydraulic fluid port of the first oil pocket 39 and the driving cylinder that drive inside cylinder barrel 27 12 for being responsible for turning to driving effect is communicated, the second oil pocket
40 and the right power-assisted hydraulic fluid port of driving cylinder 14 communicate, but now because automobile is in straight-going state or back axle not steering state, a driving cylinder left side helps
Power hydraulic fluid port 12 and the right power-assisted hydraulic fluid port of driving cylinder 14 are controlled in cut-off state by solenoid valve block, are not communicated with any oil circuit.If
Now automobile left steering wheel 1 (or right turn wheel 9) is acted on drag link 10 by external impacts power, is possessed and is ordered about drag link 10
The trend of motion, but as the first oil pocket 39 and the second oil pocket 40 are closed, due to the incompressible characteristic of fluid, make drag link
Remain stationary as, automobile is still straight-going state (or back axle not steering state).
As shown in figure 9, automobile steering state to the right.Now the 3rd oil pocket 41 on centering cylinder barrel 29 passes through centralizing cylinder hydraulic fluid port
19 are communicated with oil return tank, the 4th oil pocket 42 on centering cylinder barrel 29 through internal oil channel 37 to centralizing cylinder hydraulic fluid port 19 also with oil return tank phase
It is logical, the thrust (or pulling force) on centering cylinder rod 18 is now acted on by the 3rd oil pocket 41 and the 4th oil pocket 42 and is approximately 0, it is right
Middle cylinder rod 18 does not cut any ice to drag link 10 power；Help come the hydraulic oil Jing driving cylinders left side to hydraulic pump or high pressure accumulator
Power hydraulic fluid port 12 enters the first oil pocket 39, and promote to the right driving cylinder piston 26 in the direction of the arrow so as to drive drive cylinder rod 15 to
Right motion, drives cylinder rod 15 to drive drag link 10 and centering cylinder rod 18 to move right together and reach simultaneously by contiguous block 16
Promote the purpose of wheel steering.Simultaneously the low pressure oil in the second oil pocket 40 flow to oil return tank by the right power-assisted hydraulic fluid port of driving cylinder 14；
4th oil pocket 42 diminishes because of volume, and the low pressure oil of its intracavity flow to centralizing cylinder hydraulic fluid port 19 by internal oil channel 37 and flow to oil return tank again；
Air chamber 43 becomes big because of volume, and air is sucked from pore 24.
Automobile just returns timing hydraulic circuit to the left conversely, the hydraulic oil Jing i.e. from hydraulic pump or high pressure accumulator drives
The right power-assisted hydraulic fluid port 14 of cylinder enters the second oil pocket 40, and promotes driving cylinder piston 26 to the left so as to drive driving cylinder along arrow opposite direction
Connecting rod 15 drives cylinder rod 15 to drive drag link 10 and centering cylinder rod 18 together to the left simultaneously by contiguous block 16 to left movement
Motion reaches and promotes wheel to return positive purpose, while the low pressure oil in the first oil pocket 39 is flow to by the left power-assisted hydraulic fluid port of driving cylinder 12
Oil return tank, 42 endogenous cause of ill volume of the 4th oil pocket become greatly from oil return tank oil suction, and air chamber 43 diminishes because of volume, discharges sky from pore 24
Gas.
As shown in Figure 10, state when the centering return that breaks down is locked.Now solenoid valve block makes the left power-assisted hydraulic fluid port of driving cylinder
12 and the right power-assisted hydraulic fluid port of driving cylinder 14 all communicate with oil return tank, i.e. the first oil pocket 39 and the second oil pocket 40 are all communicated with oil return tank,
Therefore drive cylinder rod 15 not by the added force of hydraulic oil, only follow contiguous block 16 to move together；At the same time from height
The hydraulic oil of pressure accumulator is communicated with centralizing cylinder hydraulic fluid port 19, and hydraulic oil enters centering cylinder barrel 29 simultaneously Jing after centralizing cylinder hydraulic fluid port 19
3rd oil pocket 41 and the 4th oil pocket 42, the hydraulic oil into the 3rd oil pocket 41 promote to the right rear end floating piston 23, are pressed onto a left side
Stop after middle position jump ring 36；Promoted after rod end floating piston 25 to the left into the hydraulic oil in the 4th oil pocket 42, drive centering
Cylinder rod 18 is to left movement, until stop after being pressed onto right middle position jump ring 35, while the connecting rod nut being connected with centering cylinder rod 18
The top rear end floating piston of 38 left ends 23；Air chamber 43 is diminished due to volume, from 24 air-out of pore；First oil pocket 39 by
Diminish in volume, from discharge low pressure oil at the left power-assisted hydraulic fluid port 12 of driving cylinder to oil sump tank；Second oil pocket 40 becomes big due to volume, drives
The right power-assisted hydraulic fluid port 14 of dynamic cylinder is from the suction of oil return tank less than oil；As higher pressure, centering are yet suffered from inside high pressure accumulator
Cylinder rod 18 is fixed on back axle not steering state by two floating pistons, so as to reach locked function.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.
Claims (13)
1. a kind of puddle jumper rear-axle steering mechanism, including left steering lateral bracing strut (3), right turn lateral bracing strut (7), left steering
Section (2) and right turn section (8), the left steering lateral bracing strut (3) are hinged with left steering section (2), the right turn lateral bracing strut (7) and
Right turn section (8) is hinged, it is characterised in that：It also includes that integrated form drives centering hydraulic cylinder (5), the integrated form to drive centering
Hydraulic cylinder (5) left end is hinged left steering lateral bracing strut (3), and the integrated form drives centering hydraulic cylinder (5) right-hand member to be hinged right turn side
Pull bar (7)；The integrated form drives centering hydraulic cylinder (5) including hydraulic pressure cylinder housing (11), and the hydraulic pressure cylinder housing (11) is interior to be set
There is drag link to support cylinder barrel (28), drive cylinder barrel (27) and centering cylinder barrel (29)；The drag link is supported and is provided with cylinder barrel (28)
The drag link (10) of cylinder barrel (28), described drag link (10) one end is supported to stretch out drag link and support cylinder barrel (28) through drag link
Part is fixedly connected with contiguous block (16)；Driving cylinder rod (15), the driving cylinder rod are provided with driving cylinder barrel (27)
(15) one end is stretched out and drives the part of cylinder barrel (27) to be fixedly connected with contiguous block (16)；Centering is provided with the centering cylinder barrel (29)
Cylinder rod (18), the part that centering cylinder barrel (29) is stretched out in described centering cylinder rod (18) one end are fixedly connected with contiguous block (16).
2. puddle jumper rear-axle steering mechanism according to claim 1, it is characterised in that：The drag link (10) is left
End stretch out drag link support cylinder barrel (28) part be hinged with left steering lateral bracing strut (3), the right turn lateral bracing strut (7) be connected
Block (16) is hinged.
3. puddle jumper rear-axle steering mechanism according to claim 1, it is characterised in that：Driving cylinder barrel (27)
Cylinder barrel (28) is supported to be arranged relative to drag link with centering cylinder barrel (29).
4. puddle jumper rear-axle steering mechanism according to claim 1, it is characterised in that：Driving cylinder barrel (27)
Inside it is provided with driving cylinder piston (26) and is separately positioned on first oil pocket (39) and the second oil pocket of driving cylinder piston (26) left and right
(40)；The left power-assisted hydraulic fluid port (12) of driving cylinder and the right power-assisted hydraulic fluid port (14) of driving cylinder are provided with the hydraulic pressure cylinder housing (11), it is described
First oil pocket (39) is communicated with the left power-assisted hydraulic fluid port (12) of driving cylinder, second oil pocket (40) and the right power-assisted hydraulic fluid port (14) of driving cylinder
Communicate, the driving cylinder piston (26) is fixedly connected with cylinder rod (15) is driven.
5. puddle jumper rear-axle steering mechanism according to claim 4, it is characterised in that：Driving cylinder barrel (27)
Inside be provided with the magnet ring fixed seat (46) for driving cylinder rod (15) end thread to be connected and spiral shell is passed on left with cylinder barrel (27) is driven
The Linear displacement transducer fixed seat (48) of stricture of vagina connection, is provided with by cross recess coiled hair in magnet ring fixed seat (46) the left end hole
The magnet ring (49) that screw (50) is fastened, is provided with Linear displacement transducer in described Linear displacement transducer fixed seat (48)
(45), described Linear displacement transducer (45) left end is provided with Linear displacement transducer wire harness (45.1) and is connected to driving cylinder barrel
(27) outside.
6. puddle jumper rear-axle steering mechanism according to claim 5, it is characterised in that：The centering cylinder barrel (29)
Rear end floating piston (23) and rod end floating piston (25) are provided with inside, the rod end floating piston (25) is set in centering
On cylinder rod (18) and spacing by being fixed on the connecting-rod bolts (38) of centering cylinder rod (18) end, the rear end floats and lives
The 3rd oil pocket (41) is formed with centering cylinder barrel (29) inwall on the left of plug (23), on the right side of the rod end floating piston (25) and centering
Cylinder barrel (29) inwall forms the 4th oil pocket (42), shape between the rear end floating piston (23) and rod end floating piston (25)
Into air chamber (43).
7. puddle jumper rear-axle steering mechanism according to claim 6, it is characterised in that：The hydraulic pressure cylinder housing
(11) centralizing cylinder hydraulic fluid port (19) is provided with, centering cylinder barrel (29) cylinder wall is provided with internal oil channel (37), the centralizing cylinder oil
Mouth (19) is communicated with internal oil channel (37) entrance, and the internal oil channel (37) includes the first outlet in connection centering cylinder barrel (29)
(37.1) and second outlet (37.2), the first outlet (37.1) is communicated with the 3rd oil pocket (41), the second outlet
(37.2) communicate with the 4th oil pocket (42)；The air chamber (43) is communicated with the pore (24) for leading to air；The air chamber
(43) it is not communicated with the 3rd oil pocket (41), the 4th oil pocket (42).
8. puddle jumper rear-axle steering mechanism according to claim 6, it is characterised in that：The rear end floats and lives
Left position jump ring (36) and right middle position jump ring (35), the left position card are provided between plug (23) and rod end floating piston (25)
In spring (36) and the spacing groove (29.1) for being arranged on centering cylinder barrel (29) inwall of right middle position jump ring (35), the left position jump ring
(36) the distance between left end and right-hand member of right middle position jump ring (35) and the connecting-rod bolts (38) thickness are equal.
9. puddle jumper rear-axle steering mechanism according to claim 6, it is characterised in that：The magnet ring fixed seat
(46) the distance between left end and end face (45.2) of Linear displacement transducer (45) are constituted and drive cylinder rod (15) first
The effective travel being moved to the left in oil pocket (39), the left end of the right-hand member and the first guide holder (51) of the driving cylinder piston (26) it
Between distance constitute and drive cylinder rod (15) effective travel in the second oil pocket (40), the driving cylinder rod (15) is first
Effective travel in oil pocket (39) and the second oil pocket (40) is equal.
10. puddle jumper rear-axle steering mechanism according to claim 9, it is characterised in that：The rear end floats
Ultimate range between the left end of piston (23) and the right-hand member of the limit base (44) being arranged in centering cylinder barrel (29) constitutes centering
The effective travel that cylinder rod (18) is moved to the left in the 3rd oil pocket (41), the right-hand member of the rod end floating piston (25) and
Ultimate range between the left end of two guide holders (52) constitutes what centering cylinder rod (18) moved right in the 4th oil pocket (42)
Effective travel, effective travel of the centering cylinder rod (18) in the 3rd oil pocket (41) and the 4th oil pocket (42) are equal.
11. puddle jumper rear-axle steering mechanisms according to claim 10, it is characterised in that：The centering cylinder rod
(18) effective travel in the 3rd oil pocket (41) or the 4th oil pocket (42) than driving cylinder rod (15) in the first oil pocket (39) or
Effective travel in second oil pocket (40) is little.
12. puddle jumper rear-axle steering mechanisms according to claim 1, it is characterised in that：The drag link is supported
Cylinder barrel (28) two ends are provided with for supporting the DU bearings (33) of drag link (10), locating snap ring (32), jump ring (30), anti-dust seal
(31)。
13. puddle jumper rear-axle steering mechanisms according to claim 1, it is characterised in that：The integrated form drives
Centering hydraulic cylinder (5) is fixed on vehicle beam (4) by bolt (6) and installation screwed hole (13).
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| CN201410836773.3A CN104590367B (en) | 2014-12-29 | 2014-12-29 | Rear axle steering mechanism of puddle jumper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836773.3A CN104590367B (en) | 2014-12-29 | 2014-12-29 | Rear axle steering mechanism of puddle jumper |
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| Publication Number | Publication Date |
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| CN104590367A CN104590367A (en) | 2015-05-06 |
| CN104590367B true CN104590367B (en) | 2017-04-12 |
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| CN201410836773.3A Active CN104590367B (en) | 2014-12-29 | 2014-12-29 | Rear axle steering mechanism of puddle jumper |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930016B (en) * | 2015-07-08 | 2017-03-08 | 武汉理工大学 | Turn to and return positive bifunctional hydraulic cylinder |
| CN108248682A (en) * | 2018-02-02 | 2018-07-06 | 河北农业大学 | A kind of agricultural chassis of three drive electric of four-wheel |
| CN113859355B (en) * | 2021-09-30 | 2023-02-17 | 三一专用汽车有限责任公司 | Engineering vehicle and electric control hydraulic steering system, control method and controller thereof |
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| US5099939A (en) * | 1988-02-04 | 1992-03-31 | Zahnradfabrik Friedrichshafen, Ag | Multi-axle steering system |
| US5293953A (en) * | 1989-06-30 | 1994-03-15 | Mazda Motor Corporation | Rear wheel steering system for a vehicle |
| CN2866285Y (en) * | 2005-12-31 | 2007-02-07 | 中国三江航天工业集团公司 | Hydraulic centralizing cylinder of vehicle rear wheel steering mechanism |
| CN200974554Y (en) * | 2006-12-01 | 2007-11-14 | 东风汽车有限公司 | Integral power steering gear for automobile power-assisted steering system |
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| CN202194884U (en) * | 2011-08-24 | 2012-04-18 | 湖北航天技术研究院特种车辆技术中心 | Hydraulic cylinder |
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|---|---|---|---|---|
| US5099939A (en) * | 1988-02-04 | 1992-03-31 | Zahnradfabrik Friedrichshafen, Ag | Multi-axle steering system |
| US5293953A (en) * | 1989-06-30 | 1994-03-15 | Mazda Motor Corporation | Rear wheel steering system for a vehicle |
| CN2866285Y (en) * | 2005-12-31 | 2007-02-07 | 中国三江航天工业集团公司 | Hydraulic centralizing cylinder of vehicle rear wheel steering mechanism |
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| CN104590367A (en) | 2015-05-06 |
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